Join in expert discussion on quantum physics. Quantum physics is the mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics and Field Theory.
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Graduate Does the Quantum Zeno Effect Contradict the Heisenberg Uncertainty Principle?
- jadrian
- · Replies 9 ·
Graduate Why can't the wavefunction equal infinity?
- LogicX
- · Replies 2 ·
Graduate Derivation of Fowler-Nordheim current density
- zeus_the_almighty
- · Replies 9 ·
Graduate Infinite Energy beneath Quantum Vacuum?
- waterfall
- · Replies 6 ·
Graduate Understanding Force on an Atom in the Heisenberg Picture of Quantum Mechanics
- Niles
- · Replies 1 ·
Graduate Number of components of Dirac spinor in arbitrary dimensions.
- arroy_0205
- · Replies 8 ·
Graduate Relationship between electron and quark charge
- a dull boy
- · Replies 7 ·
Graduate Wigner's Theorem/Antiunitary Transformation
- thoughtgaze
- · Replies 4 ·
Graduate C is infinity thus electrons can be in two places at once
- dadnoonan
- · Replies 12 ·
Graduate Observables and Commutation (newbie questions?)
- JDoolin
- · Replies 37 ·
Graduate Why not diffeomorphism group representation theory?
- lugita15
- · Replies 28 ·
Graduate Photon interaction during refraction
- harrylin
- · Replies 3 ·
Graduate Gauge invariant Lagrangian: unique?
- electroweak
- · Replies 2 ·
Graduate What is the Landau pole and how does it relate to the coupling constant in QED?
- waterfall
- · Replies 3 ·
Undergrad What gives atoms solidity if most of the atom is empty space?
- Aditya3003
- · Replies 5 ·
Graduate What is symmetry breaking in the Standard Model?
- friend
- · Replies 5 ·
Graduate The Double Slit Experiment: The weirdness of quantam physics
- Memyslef
- · Replies 2 ·
Graduate Is the uncertainty principle a limit of observation rather than reality?
- jadrian
- · Replies 7 ·
Graduate Is uncertainty inherent in QM?
- San K
- · Replies 13 ·
Graduate Small=high mass at quantum level, but big=high mass at classical level. Why?
- SteveinLondon
- · Replies 7 ·
Undergrad What actually happens when a photon strikes an atom?
- Decimator
- · Replies 1 ·
Graduate How do we arrive at Q = -1 from T3 and Y?
- the_pulp
- · Replies 1 ·
Graduate 1/f noise at zero frequency or dc
- iVenky
- · Replies 2 ·
Graduate Demonstration of Dirac equation covariance
- Vilnius
- · Replies 2 ·
Graduate Ampere's law with quantum mechanics
- exmarine
- · Replies 2 ·
Graduate Why does reflection introduce a minus sign in the Hong-Ou-Mandel effect?
- phonon44145
- · Replies 20 ·
Graduate Can Slater Determinant Explain the Difference Between Bosons and Fermions?
- hokhani
- · Replies 6 ·
Graduate Do the wave equations need to be modified for obstacles?
- San K
- · Replies 3 ·
Undergrad Electromagnetic and strong force
- johann1301
- · Replies 3 ·
Undergrad Why do electron shells hold different numbers of electrons?
- scientifico
- · Replies 2 ·
Graduate Does the Quantum Observer Effect Imply Consciousness Influences Reality?
- Theoretically
- · Replies 2 ·
Graduate Do we really need physical/real waves to explain single particle interference?
- San K
- · Replies 10 ·
Graduate Uncertainty principle and information theory
- jadrian
- · Replies 12 ·
Graduate Is photon emission possible without electrons changing energy levels?
- Charles123
- · Replies 9 ·
Graduate Quantum Computing gate matricies
- Fixxxer125
- · Replies 2 ·
Graduate UN-entanglement? is that possible?
- 3m0k177y
- · Replies 2 ·
Graduate Dynamics in the heizenberg picture
- dudy
- · Replies 2 ·
Graduate Does quantum information theory imply information cannot be destroyed?
- Rhydo
- · Replies 2 ·
Graduate Increase in amplitude of an electron wave
- SteveinLondon
- · Replies 5 ·
Graduate Why Isn't the Strong Nuclear Force Unified with Electroweak in GUT Models?
- tinto99
- · Replies 9 ·
Graduate Do Virtual Particles Become Real Under the Weisenberg Uncertainty Principle?
- Kyoma
- · Replies 29 ·
Graduate Quantum field theory and the renormalization group
- Naty1
- · Replies 3 ·
Graduate Thermionic emission at same temperature
- goran d
- · Replies 1 ·
Graduate Must the State |O,ready> Be Orthogonal to |O,reads up> and |O,reads down>?
- deneve
- · Replies 1 ·
Undergrad What Is the Uncertainty in the Gradient of My Linear Graph?
- quietrain
- · Replies 10 ·
Graduate Hydrogwn atom electron probability
- jd12345
- · Replies 2 ·
Graduate Linearity of inner product with negative kets
- andrewkirk
- · Replies 3 ·
Graduate Can Someone Please Explain Hermitian Conjugates To Me?
- Bowenwww
- · Replies 9 ·
Graduate Why does the quantum eraser pattern vanish with polarizing filters?
- palleon
- · Replies 1 ·
Graduate What are the energy states of a hydrogen atom in a B field?
- jhendren
- · Replies 1 ·
Undergrad What are the differences between the two graphs of electron probability density?
- jd12345
- · Replies 1 ·
Graduate Exchange splitting of energy levels of a system?
- genericusrnme
- · Replies 1 ·
Graduate Where is the arrow of time if every decision is essentially instant?
- Ryan_M
- · Replies 2 ·
Graduate Deriving Stationary State Wave Functions for a Free Particle on a Ring
- MichalXC
- · Replies 25 ·
Graduate QFT as pilot-wave theory of particle creation and destruction
- the_pulp
- · Replies 10 ·
Graduate Questions about the delayed choice quantum erasure experiment
- Xilor
- · Replies 5 ·
Graduate Nonlocality and Compactified Dimensions
- waterfall
- · Replies 1 ·
Graduate Ok, suppose Macro-entanglement is possible
- 3m0k177y
- · Replies 14 ·
Graduate The Mystery of Quantum Entanglement: Feynman's View on the Double Slit Pattern
- San K
- · Replies 6 ·
Graduate On Thought Experiments: Question
- Alcubierre
- · Replies 1 ·
Graduate What dimensions are time crystals described as having?
- blackraven
- · Replies 1 ·
Graduate Understanding spin, spinors, and rotations
- VantagePoint72
- · Replies 7 ·
Graduate Spherical harmonics and wavefunctions
- Chemist20
- · Replies 6 ·
Graduate Zeeman effect - spin orbit coupling
- Chemist20
- · Replies 4 ·
Graduate Quantum mechanics without wavefunctions
- cgk
- · Replies 13 ·
Graduate Ref for single electron double slit experiments
- marsdk
- · Replies 3 ·
Graduate How does Perturbation theory account for interactions in QED?
- rodsika
- · Replies 8 ·
Graduate Wave function collapse with Young's double slits.
- inquiring
- · Replies 2 ·
Graduate First-order wavefunction corrections in degenerate perturbation theory
- Niles
- · Replies 4 ·
Undergrad What Are the Force Carriers in the Four Fundamental Forces of Physics?
- beatlemaniacj
- · Replies 2 ·
Undergrad Energy of light ( wave or particle)
- jd12345
- · Replies 5 ·
Undergrad What does the Ångström symbol (Å) mean in quantum wells?
- Jin 06
- · Replies 5 ·
Graduate Derivative of an operator valued function
- giova7_89
- · Replies 15 ·
Graduate Wave function is always in abstract space?
- waterfall
- · Replies 24 ·
Graduate Schrodinger Equation and wavefunctions
- Chemist20
- · Replies 1 ·
Undergrad Energy levels hydrogenic atoms
- Chemist20
- · Replies 6 ·
Undergrad Radial distribution function, concept.
- Chemist20
- · Replies 4 ·
Graduate How does quantum field theory differ from quantum mechanics?
- waterfall
- · Replies 67 ·
Graduate What is the difference between interaction and measurement?
- Xilor
- · Replies 17 ·
Graduate Two Groups of Entangled Photons
- StevieTNZ
- · Replies 11 ·
Graduate Can photon-photon interactions alone produce black body radiation?
- Rap
- · Replies 12 ·
Graduate Quantum superposition and Vector Space
- spaghetti3451
- · Replies 3 ·
Graduate Lagrangian vs Hamiltonian in QFT vs QM
- waterfall
- · Replies 13 ·
Undergrad Dose E=hn means quantization of energy?
- athrun200
- · Replies 5 ·
Graduate Charge Conjugation and Internal Symmetry Representations
- erccarls
- · Replies 1 ·
Graduate U(1), SU(2), SU(3) are symmetry of what?
- friend
- · Replies 5 ·
Graduate Can better sensors extract more info from old lens w/o limits?
- nugat
- · Replies 1 ·
Graduate Any useful applications at all?
- Agerhell
- · Replies 1 ·
Graduate When did quantum mechanics first enable practical technology?
- mjpam
- · Replies 5 ·
Graduate I can't figure out if these are matrices or numbers
- Matterwave
- · Replies 3 ·
Undergrad Do Slater's Rules and Hund's Rule Contradict Each Other?
- Paperfish
- · Replies 1 ·
Graduate Evidence that electron is a point particle?
- jewbinson
- · Replies 4 ·
Graduate Why is the color invariant in equation 18.38 a linear combination?
- ndung200790
- · Replies 7 ·
Graduate What is the direction of angular momentum vector of a photon?
- jartsa
- · Replies 5 ·
Graduate Can Quantum Probability Fields Mimic Wormhole Effects in Particle Transfer?
- questionpost
- · Replies 2 ·
Graduate What does spin 1/2 mean for a particle?
- Feeble Wonk
- · Replies 3 ·
Graduate Radial wave function in H atom
- facenian
- · Replies 8 ·
Graduate Can a photon have energy of spin?
- James_Harford
- · Replies 4 ·
Undergrad Electromagnetic radiations in bohr model
- jd12345
- · Replies 13 ·
Graduate Quantum Harmonic Oscillator Question
- achilleasatha
- · Replies 6 ·